However, there was no significant difference between the oil or oil + Silwet L-77 treatments when used to treat Grammatophyllum orchids for flat mite infestations, although the oil alone and the oil + Silwet L-77 treatments were both significantly better than the water control (experiment 3: P < 0.

There was no significant difference between the oil alone and the oil + Silwet L-77 treatment when treating Grammatophyllum orchids for flat mite infestations, perhaps due to the fact that Grammatophyllum orchids have large, thin leaves that show very little pitting as a result of feeding by the flat mite.

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